Mar 12, 2013

If you happen to bricked your CD-R King CW-5356U / CW-5358U by updating with the wrong Tomato firmware then worry no more that was also happened to me. Here's a quick guide thanks to TipidPC forum credits to the poster and to the contributors.

First of all what you need is "USB to UART (Serial TTL) Converter Prolific PL2303" for only 250 peso you can get it from e-Gizmo for the JTAGging. Second, must have the stock firmware of CW-5356U you can download from heremirror.

You should have a console tool first!!

1. I flash the other tomato firmware from shibby -->tomato-K26USB-1.28.RT-N5x-MIPSR2-084V-BT-VPN_N10U.trx
It seems work , but when I reset (clean nvram), it Bricked !!! I can not get the IP after rebooting!

2. I plug my console tool on the CW-5356U's 4 pin console port and open terminal on windows XP

3. I set my PC Manual IP 192.168.1.5 submask 255.255.255.0 default gateway 192.168.1.1
(this is because I saw the info on terminal)

4. Turn on the power and keep clicking CTRL-C at the first seconds CW-5356U on
the terminal will show CW-5356U stop at CFE mode

5. I open IE and go to 192.168.1.1 then the screen shows :
Broadcom - CFE miniWeb Server page

6. choose the right file ( I got from CD-R king named "CW-5356U_1214.trx")
7. wait until its done and show
Upload completed. System is goning to reboot. please wait a few moment~

Unbricking the two routers

Unbricking CW-5358u

CW-5358u

CW-5358u (Pinout from Left to Right)
Pin 1 - Vcc 3.3V (Don't connect anymore since the router will be powered by the supplied adaptor. You may test as well with a multimeter and you'll get 3.3V)
Pin 2 - GND (Connect to GND on TTL Converter)
Pin 3 - TXD (Router side) to be connected to RXD on UART Converter
Pin 4 - RXD (Router side) to be connected to TXD on UART Converter

I am also repairing Huawei4G WiMAX wireless modem such as BM622, BM622i, BM625, BM622m and others alike. Please take note that I am not a hacker like others does, I only repair all electronics stuff this will include modem and routers, firmware customization also.